Driving-gearing for motor-vehicles.



H. P. MAXIM.

DRIVING GBARING FOB. MOTOR VEHICLES.

APPLIOATION FILED MAR. 1s, 1912.

Lwsms.

Patented-July 21, 1914,

53,. Q@ W 145 7M v 5 v f/ 63 /56 f6 6;? 65 6,7 v y 66l j?? 5 76 656? 7% 67 y. Il@ .//7 I, 65

116 w y v 5? 7/ /f/f HIRAM P. MAXIM, OF HARTFORD, CONNECTICUT, `i:'3.SSIGr.l\Olt TO THE L'LERLEY COMPANY, OF INDIANAPOLIS, INDIANA, A CORPORATION OF INDIANA.

DRIVING-GW' RING- FOR IVIOTOR-VEHICLES.

specification of Letters rareza.

Patented July dit, 15551155.

Application filed March gy 1912. Serial No. 684,000.

To all whom t may conce/m Be it known lthat l, HiRAM 1).,Maxiii', a citizen of the United States, and a resident of Hartford, in the county of Hartford and State of Connecticut, have invented a new Improvement in Driving-Gearing for Motor- Vehicles, of which the following is a speciication.

My invention relates to the type of mechanism above mentioned and an object of the invention, among others, is to provide a driving gearing that shall beparticularly efficient in its method of operation.

One form of device embodying my invention and in the construction and use of which the object above set out, as well as others, may be attained is illustrated in the accompanying drawings in which-.-

Figure 1 is a detail view in side elevation showing .a portion of a motor casing with my improved driving gearing connected thereto, the parts being shown partially in section. Fig. 2 is a view partially in section through the gear casing and contained parts on the plane denoted by dotted line 2 2 of Fig. l. Fig. 3 is a view in section through a portion of the mechanism on the plane denoted by dotted line 3 -3 of Fig. 2, scale vIl() enlarged over Fig. 2.

W'hile I have selected a motor vehicle for the purpose of illustrating and describing my inventionhereiii it will be understood that I do not necessarily limit the invention to such a construction although it finds ready adaption thereto, and especially to that type of motor vehicle illustrated and described in my co-pending application of Serial Number 418,050, filed February 27 th,

1908, the present application being a divi-l sion from said co-pending application.

In the accompanying drawings the numeral 13 denotes a motor casing of the electric type having lugs etal to which caps or straps 45 are secured formingan opening f LG serving as a means for suspending the motor casing from any suitable part of the vehicle frame. This motor may be of any vapproved type of construction including lields 48 and an arn'iature i0, the casing 43 being recessed as at 50 at the end of the opening into the casing. A' plate 51 is rigidly secured to the casing to close this opening, and a housing for a portion of the driving mechanism is irn'ilysecureo to this plate. This housing is preferably formed in two sections 52-53 and including as a whole a tubularly formed portion 54, overlying a circularly formed portion 55. rThe two sections of the housing meet preferably on the line ofthe axis of a shaft 56 and are secured as by means of bolts passing through openings 57 in flanges on the sect-ions of the housing.

The shaft 56 extends lengthwise of the tubular portion 54; of the casing and has suitable bearings therein preferably of the ball type, the bearing 58 at the outer end'of the shaft being a ball thrust bearing of any suitable form, and the bearing 59 being of.

the ball bearing type, also of any suitable form of construction.

The plate 51 is recessed as at lOtfor the reception of the ball bearings 60, it being understood that this bearing includes the balls and its easing and bearing ring. The tub|ilar portion 5a is counterbored as at 105 to receive the bearing plate 106 against which balls of the thrust bearing rest. A cap 107 is secured to the tabular portion 54 to close the opening in the end thereof, this cap having a bearing plate 108 opposing thrust of the balls against the plate 106. The tube 54: is suitably formed as shown to receive and retain the various ball bearings.

A coupling 6l unites the shaft 56 with the motor shaft 62, the latter being mounted in 4the ball bearing 60 above described. A

worin member 63 of a worm gearing is located on. the shaft 50, this gear having a steep pitch. In the form herein shown itincludes a plural number of spirals-or teeth, each of course extending one or more times about theshaft.

The gear 63 meshes with a wheel 64 which `includes in its construction a ring 65 having teeth suitably formed to mesh with helices or teeth on the gear 63, said ring being inclosed between rims 66 secured tothe outer ends of arms (i7. rlhese arms project from a hub 08, there being two rows of arms about the hub, as shown in Fig. 3 of the drawings, the hub in fact consisting of two members ,and this flange on the nut. squared as at 75, or may be' made of other joined by the arms' and rims to form the wheel Gli. The hub of this wheel is loosely mounted upon shaft 69 comprising separate parts mounted in the sections 52-53 ot the housing and having the usual compensating gears 70 secured thereto and meshing with a bevel pinion 71 upon a stud 72 secured tothe svorm wheel 64.

My invention contemplates such adjustment between the members of the compensating gears as to causethe members to accurately mesh, this adjustment being" readily manipulated to taire up any wear between the parts.

In the 'form of the invention as herein shown Vthe stud 72 is threaded, as seen in Fig. 1 of ,the drawings, and a nut 73 is located upon this threaded portion of the stud. The nut is tianged and ball bearings 74 are located between the back of the pinion 71 The nut is non-circular shape, and lips 7 G extend from thel arms G7 located on opposite sides of the nut to rest against its squared portion, there being two lips from each arm as plainly shown in Fig. 3 ot the drawings. It will be seen from-this construction that the nut is securely held against turning movement, but by loosening the' bolts 77 that hold the two rim members of the worm wheel together the lips may -be disengaged from thenut, the latter turned to properly adjust the parts, and then by securing the rims inposition the nut is securely held against accidental movement; (The compensating shaft 69 may be connected at each end with the inner sections of a vdriving shaft, universal j oints of any approved Jform and construction uniting the ends of the compensating shaft with the sections of the driving shaft in a manner'well known.

I do not limit my invention as embodying a construction exactly like that herein shown and described as such a construction may be changed to a greater or lesser degree and yet include the invention herein disclosed.

My improved device is especially constructed to provide means for causing perfeet intel-meshing of the two members of. the worm gearing and at the same time produce a satisfactory bearing. To this end the journals (3S ot' the, worm wheel (ist include tapered sleeves i116 between which and a tapered bearing 117 the rollers 'aremounted. l.Vashers l'lS are located between the sidesi'zt the vworm wheel and the ends of tapered sleeves 11G. By transposing the washersfrom one side to the other of the worm wheel its position with respect to the meshing worm member or worm may be changed to cause a. perfect mesh between said members. By introducing washers any wear between the Darts may be taken up,

lnectedwith said pinion` this construction allowing the worm wheel to be changed laterally without affecting the bearing parts.

I claimi r LA rotating member, drivenA members, operative connections between the rotating member and driven member, said connections -including a pinion supported by the rotating member and connected with the driven members, a threaded stud bearing said pinion, a nut on thve threaded stud and supporting the thrust "of said pinion, said rotating member having means for preventing rotation of the nut, and means for driving the' rotating member.

2. A rotating member having ears projecting therefrom, a threaded stud borne by the rotating member, a'pinion mounted on said stud, a nut located on the stud and supporting `the thrust of said pinion, said ears on the rotating member acting to hold the nut against rotation, means for driving the rotating member, and' driven members operatively connectedyvithsaid pinion.

A rotating member, a threaded stud borne bybthe rotating member, a pinion mounted on said stud, .1a nut threaded on the stud and having a flange supportingthe thrust of said pinion and -a .non-circular shaped portion, said rotating member having ears engaging'said non-circular shaped portion of the nut to hold it against rotation, means vfor driving the rotatin member, and driven members operative y con- 4. A rotating member iincluding separable side parts, aj threaded`stud borne by the rotating member, a* pinion mounted on the stud, a nut threaded on thestud and sup-v porting the thrust ofsaid pinion, the separable parts of the rotating member having means located in eoacting engagement with the nut tb hold it against rotation, means for driving the rotating member, andlriv'en members operatively connected with theretating member. f*

5. In a driving mechanism for motor vehicles, aA gear including two sections each including a hub, arms projecting radially therefrom, and a rim supported at the outer end of said arms thus forming a cage, a toothed ring clamped between said rims, a threaded stud secured between said rims and projecting inwardly, a nut located -on the threaded portion of the stud, a pinion supportedon the st ud and backed by said nut, said rims having oppositely disposed ears projecting to hold said nut from rotation, and driven mechanism located with-V in said cagcsand connected with said pinion.

6. In a driving mechanism for motor vehicles, a rotating member, driven members, operative connections between said members, said connections comprising a stud.

rigidlyvsecured to the rotating member and preventing;` rotation of thenut, and means having its ouiel; end threaded, a pinionhsullfor driving the rotating member. ported on sai stud and connected-wit t e l driven members, a nut engaging the thread HIRAM P' MAXIM 5 on the stud and movable lengthwise on said Witnesses:

stud, said nut supporting the thrust. of the 'ARTHUR B. JENKINS, pinion, means on the rotating member for EVA L. S'roUGH'roN. 

